Question

is root 21 a rational number. give reason

Answer 1

Answer:

Root 21 is an irrational number... this is because.. Root 21 cannot be expressed in p/q form where q≠0 and p and q have no common factors (except 1).

Step-by-step explanation:

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Answer 2

Answer:

Explanation:

The √21. when evaluated produces a number that has a non terminating and non repeating decimal part. Numbers that are rational can all be written in the form:

ab

b≠0

Where a and b are integers.

Non terminating decimal number that have repeating digits can be written in this form so are called rational numbers